A303489 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 1 | | 6 |
| | | | | | | | 1 | | 1 | | 8 | | 60 |
| | | | | | | 1 | | 1 | | 10 | | 105 | | 840 |
| | | | | | 1 | | 1 | | 12 | | 162 | | 1920 | | 15120 |
| | | | | 1 | | 1 | | 14 | | 231 | | 3640 | | 45045 | | 332640 |
| | | | 1 | | 1 | | 16 | | 312 | | 6144 | | 104720 | | 1290240 | | 8648640 |
| | | 1 | | 1 | | 18 | | 405 | | 9576 | | 208845 | | 3674160 | | 43648605 | | 259459200 |
| | 1 | | 1 | | 20 | | 510 | | 14080 | | 375000 | | 8648640 | | 152152000 | | 1703116800 | | 8821612800 |
|
A303489 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20
| | 60 | 105 | 162 | 231 | 312 | 405 | 510
| | 840 | 1920 | 3640 | 6144 | 9576 | 14080
| | 15120 | 45045 | 104720 | 208845 | 375000
| | 332640 | 1290240 | 3674160 | 8648640
| | 8648640 | 43648605 | 152152000
| | 259459200 | 1703116800
| | 8821612800
|
A303489 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20
| | | | 60 | 105 | 162 | 231 | 312 | 405 | 510
| | | | | 840 | 1920 | 3640 | 6144 | 9576 | 14080
| | | | | | 15120 | 45045 | 104720 | 208845 | 375000
| | | | | | | 332640 | 1290240 | 3674160 | 8648640
| | | | | | | | 8648640 | 43648605 | 152152000
| | | | | | | | | 259459200 | 1703116800
| | | | | | | | | | 8821612800
|
|
